I advise everyone who requires a little Bluetooth keyboard to purchase. has benefits 1. A pleasant keyboard with short, gentle keystrokes that are nonetheless audible. 2. Quick switching among three linked devices—actually switches, really works, quickly and conveniently. 3. It is portable and light, so you can take it with you. 4. Good aesthetics and design. 5. Solid construction; no creaking; high-quality plastic. Batteries, but not one that can be taken out. I use batteries, but if I forget to charge them or sit down unexpectedly, I just buy a few cheap batteries from any store and carry on. One drawback is that no covers are included. Either a carrying pocket made of leather or leatherette or a plastic cover that could, for instance, be used as a holder for a phone or tablet, would be ideal. However, it is recognized in advance that this is not a part of the kit. So, rather than being a drawback, this is more of a want.